In an acute inhalation toxicity study (MRID [number]), groups of young adult (strain) (species) (#/sex) were exposed by inhalation route to chemical name (% a.i.) in (name of vehicle if appropriate) for [#] hours to (nose only, head only or whole body) at concentrations of   x, x, or x  mg/L.  Animals then were observed for [#] days.


LC50 Males =    mg/L (95% C.I. if available)

      Females =    mg/L (95% C.I. if available)

      Combined =    mg/L (95% C.I. if available)

      (or note if no mortality occurred, note if limit test)


(Chemical name) is classified as being of (LOW, SLIGHT, MODERATE, HIGH) Toxicity based on (males or females which ever is lower) [include EPA Toxicity Category I, II, III or IV if joint review].  Label comment if applicable.


(Include only major treatment related clinical signs, body weight or necropsy signs including onset and/or duration if any, or the following statement:  There were no treatment related clinical signs, necropsy findings or changes in body weight.)  Note if there was a NOAEL for clinical findings (for Acute reference dose consideration during subsequent risk assessment).